1. Transportation
    Aviation  Road transport 

2. Military

3. Other

M22, M.22 or M-22 may refer to:

Transportation

Aviation

• BFW M.22, prototype, 1928 German bomber
• Jancsó-Szokolay M22, 1937 Hungarian sailplane
• Magni M-22 Voyager, autogyro
• Mooney M22 Mustang, 1964 American light aircraft
• Shvetsov M-22, a Soviet version of the Bristol Jupiter aircraft engine
• Russellville Municipal Airport (FAA LID: M22)

Road transport

• M22 (New York City bus), a New York City Bus route in Manhattan
• Highway M22 (Ukraine)
• M-22 (Michigan highway), a state highway in Michigan
• M22 motorway (Northern Ireland)

Military

• HMS M22, Royal Navy M15 class monitor; later HMS Media
• M22 Locust, a light tank of World War II
• M-22 Uragan/Shtil (SA-N-7, Gadfly), Soviet naval multirole SAM system
• M22, the US Army designation for a type of 7x50 binoculars

Other

• M 22, a political movement of the 1970s and 1980s in Congo-Brazzaville
• M22, a vitrification agent or cryoprotectant, used in cryonics and cryopreservation
• The Mathieu group M22 in the mathematical field of group theory
• Messier 22, a globular cluster in the constellation Sagittarius
• Mälar 22, sailboat class
• M-22, a British-German DJ and producer duo consisting of Matt James and Frank Sanders.

• Pseudothyretes rubicundula
• Pseudo-TLD
• Pseudotmesisternus
• Pseudotmesisternus vestitus
• Pseudotoglossa
• Pseudotolida
• Pseudotolida awana
• Pseudotolida ephippiata
• Pseudotolida morimotoi
• Pseudotolida multisulcata
• Pseudotolida sinica
• Pseudotolida tokyoensis
• Pseudotoma
• Pseudotomoxia
• Pseudotomoxia albonotata
• Pseudotomoxia fasciata
• Pseudotomoxia horni
• Pseudotomoxia kamerunensis
• Pseudotomoxia mosseliana
• Pseudotomoxia palpalis
• Pseudotomoxia quadrinotata
• Pseudotomoxia rufoabdominalis
• Pseudotomoxia trilineata
• Pseudotomoxia trimaculata
• Pseudo-torch syndrome